Hello, I have a site to site vpn to another place and I would like to know if it is posible to do a source NAT (over the vpn)  to masquerade my LANs IP, so the other site of the VPN only see one IP different from my LAN. 

Like the same thing you do with overlapping LANs over a site to site vpn.

I can not find any documentation so Im not sure if the RV042G can do it.

Thanks for any help.

Marcos